Question

The diaphragm working with the ribs o They carry more blood. There are fewer of them. They tend to be much bigger. O o They receive blood under pressure. QUESTION 5 Genetic drift is a type of evolution that occurs randomly, without any sort of natural selection. True False QUESTION 6 Natural selection requires three facts of nature. These are Species endemic to islands, individual variation, and not all offspring survive Individual variation, variations are inherited, and not all offspring survive Individual variation, parental variation, and not all offspring survive

Answer 1

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occurs Genetic drift a proces of evolution in which the change in gene frequencies of a Population across the generation purely by chance factor. Chenetic drift is found in small-sized population and negligible in the larg-sized population. It will be zero if the sample size is infinite, which is on unrealistic assumption. Chenetic drift can be measured by Standard deviation. henetic drift doesn't depend on the allele's harmful or beneficial effects, unlike in natural selection. That's why the given statement is True. Genetic drift is a type of evolution that occurs randomly, without any Sost of natural Selection, o True